Find the perimeter of an isosceles triangle whose one side is 10 cm greater than each of its equal sides and perimeter is 100 cm.
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Step-by-step explanation:
➨ Given :
- Find the perimeter of an isosceles triangle whose one side is 10 cm greater than each of its equal sides and perimeter is 100 cm.
➨ To Find :
- The perimeter of an isosceles triangle.
➨ Solution :
Let the length of each of the equal sides be x cm.
Then, length of the unequal side will be (x+10) cm.
➨
Perimeter = 3x + 10 = 100
3x + 10 = 100
3x = 90
x = 30
∴ The sides are 30 cm, 30 cm & 40 cm.
➨ As we know,
∴ Perimeter = 30 + 30 + 40 = 100 cm.
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